<template>
  <div>
    <el-button @click="addSomething">$listeners - 子组件</el-button>
  </div>
</template>

<script>
export default {
    mounted() { 
        console.log(this.$listeners)
    },
    methods: {
        addSomething() { 
            this.$listeners.changeName("点击的时候改了父组件")
            this.$listeners['test-a']();
        }

    }
}
</script>

<style>

</style>